Improvement in offal-driers



UNITED STATES PATENT OEEIOE.

MATTHEW ANDERSON, OE CHICAGO, ILLINOIS.

IMPROVEMENT IN OFFAL-DRIERS.

Specification forming part of Letters Patent No. 139,528, dated June 3, 1873; application filed March 8, 1873.

To all whom it may concern:

Be it known that I, MATTHEW ANDERSON, of Chicago, in the county Ot' Cook and State of Illinois, have invented a new and Improved Drying and Deodorizing Machine, Ot" which the following is a specification:

For drying and deodorizin g the off-al of packing-houses rapidly and efficiently I propose to have a jaeketed cylinder, to be heated with steam, in which the oft'al will be inclosed, the said cylinder containing an agitator to stir the oft'al rapidly, and havin g' air-pipes for dischargin g heated air throughout the mass at the same time, the air being heated in a coil surrounding the steam-jacket, and connecting with the shaft of the agitator, which is hollow, and conducts the air, which isto be forced in by a pump or blower, to perforated tubes ou the agitating-blades, from which it is distributed soA as to circulate thoroughly through the substance to be dried, and then escapes through a pipe to carry otf the odor to a fire, ifA preevation.

A is a sheet-metal hollow cylinder surrounded by a jacket, B, having an inlet-pipe, G, for

admitting steam to the space D to heat the cylinder. lt also has an outlet-pipe, E, for the escape of the steam. F is an opening through the side ot' the jacket and the cylindermfor introducing the substance to be treated. Gr is an opening at one end for the discharge of the dried material. These openings willbe closed steam-tight, and F will be so arranged that there will be no communication from the interior to the space D. H represents agitatingblades within the cylinder A on a revolving shaft, I, for thoroughly agitating the mass contained in the cylinder. J represents perforated tubes attached to the stirring-blades, and communicating with the interior Ot' the shaft I for distributing hot air through the mass as it is stirred for drying it, and carrying ofi' the odor through the escape-pipe L. 'lhe air is heated in a coil, M, surrounding the jacket,

and conducted into the hollow shai'tby a pipe,

N, at the air-tight joint O in one ot' the journal-bearings ot the shaft. The air-distribut` ing pipes J being attached tothe strong agitating-blades are supported by them against the resistance of the material through which they Work. The pipe C will be connected with a boiler, and the coil with any suitable air-forcing apparatus.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent- The pipe coil M, applied, as described, around the steam-jacket D, the said coil being connected by suitable tubing with the inside ot cylinder A to furnish a supply of air.

y MATTHEW ANDERSON.

\Vitu esses:

. H. HOLMES,

MORGAN OBRIEN. 

